Electromagnetic organ valve



May 2, 1933.

H. E. BURTON ELECTROMAGNETIC ORGA'N VALVE Filed 0d. 15, 1928 ATTORNEY Patented May 2, 1933 hf UNITED T STATES PATENT OFFICE HENRY EDWARD BURTON, 0F HAGERSTOWN, MARYLAND, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO THE W. H. REISNER MANUFACTURING COMPANY, OF HAGERSTOWN, .,MARYLAND, A CORPORATION OF MARYLAND ELECTROMAGNETIC ORGAN VALVE Application. filed October 13, 1928.

This invention relates to electromagnetic valves and more particularly to magnet valve units arranged to control the supply of air to the action box or other pneumatics associated with a pipe organ or similar device.

Magnet valves of this type are usually formed as an integral unit adapted to be attached to the outside of the action box with whichthey are associated. The valve elements in these units are extremely delicate in action and frequently become clogged by, particles of sawdust or other foreign matter .carried into' the action box by the air flowing therein. In many organ installations, these valves are placed in dark and inaccessible places about the organ structure, and whenit becomes necessary to repair or ad'ust them for any reason, considerable dit culty has been experienced in properly replacing and adjusting the valve parts.

The object of the present invention is to provide an improved electro-magnetic organ valve construction which shall facilitate the assemblage of the valve parts when it is necessary to adjust or repair the same for any reason, and this object is accomplished by mounting all of the movable or adjustable valve parts on a removable closure for the valse casing so that these parts may be removed and inspected without disturbing the casing which is rigidly secured to the organ action box.

. Another object of the invention is to provide a valve of the character designated having a shield partially enclosing that portion of the valve located within the action box so as to minimize the possibility of any foreign matter entering the valve from the inside of the box to which it may be attached.

Another object of the invention is to provide an organ magnet valve of the character designated having an armature disk valve element of improved construction.

A further object of the invention is to provide a magnet valve unit which shall be durable in construction, cheap to manufacture, andv which shall. be more efficient in operation than similar valves heretofore employed.

Serial N0. 312,280.

These and other objects of the invention will be more manifest from the following description when read in connection with the accompanying drawing, and specifically set forth in the appended claims.

I11 the drawing,

Figure 1 is a sectional view of an organ wind box employing a magnet valve embodying the present invention.

Figure 2 is a perspective view of the valve casing cover and the valve parts.

Figure 3 is a section on line 33 of Fig. 1.

Figure 4 is an enlarged sectional view of the armature'disk on line 44 of Fig. 2.

Referring to Fig. 1 of the drawing, the numeral indicates a wind or action box of a pipe organ having a magnet valve unit attached to the outer wall thereof and arranged to control other pneumatics associated therewith in the usual manner as well known in the art. The magnet valve unit comprises a hollow casing 11 and an electromagnet 12 having its pole-pieces 13 mounted in the wall thereof which is attached to the organ action box. An opening 14 is provided in the lower wall of the action box and is of sufficient size to accommodate the magnet which projects therein when the valve unit is assembled to the action box. Communication between the valve casing 11 and other pneumatics is afforded by means of a passage 15 and air through this passage is regulated by valve members constructed and arranged in accordance with the present invention. The valve casing 11 is preferably made of suitable metal such as aluminum and especially constructed and arranged so that the same may be die-cast in a single operation.

The walls of the valve casing 11 are constructed to form an oblong interior chamber 16 that is open on the lower side and this opening is closed by a cover plate 17 which may be attached to the casing in any suit-able manner, as, for example, by screw threads. The chamber 16 communicates with the action box 10 through a small aperture 18 in the top wall of the casing 11 and with the passage 15 by means of an opening 19 also in the top wall of the casing, which lies adjacent to the action box.

The valve mechanism for controlling the passage of air through the casing 11 comprises a loosely mounted disk valve element 20 of magnetic material and of improved construction as hereafter described. This disk element is supported and guided by the walls of a cylindrical member 21 mounted on the casing cover 17 and adapted to form a valve chamber for the valve element 20. The cylindrical member is open at the top so that the disk, when attracted by the poles of the magnet 13, may engage the sides of the opening 18 and shut off the passage of air to the action box.

The cylindrical valve chamber 21 isconneetcd to the cover plate 17' b a tubular section 22 extending from the bottom wall of the chamber to the cover plate. This tubular section being of small diameter, serves to provide an annular passage 23, which permits air to circulate freely around the bottom of the valve chamber 21 and enter air passages 24 which are also provided in the bottom wall of the valve chamber. Communication between the interior of the valve chamber 21 and the atmosphere is provided by means of a threaded tube 25 which extends through the cover plate 17 and the tubular member 22. The inner end of the threaded tube 25 is arranged to provide a valve seat 26 for the valve disk 20. This tubular member also provides a convenient means for regulating the range of movement of the valve disk 20 so that its operation may be adjusted to suit a wide variety of work ing conditions. The outer extremity of the tube is provided with a notch 27 so that a workman may readily turn the tube and thereby adjust the valve disk without. removing any of the valve parts.

It will be noted from the above description that in avalve thus constructed, all of the movable or adjustable valve parts are carriedin assembled relation by the cover which closes the casing 11. This is an important feature, since it enables a workman to retain all the valve parts in their normal positions when it becomes necessary to remove the cover to repair or adjust any of the valve parts.

Another important feature of the invent1on s the provision of a shield 29 for the open ng 18 which shall also extend to the interior of the wind box, so that relativel clean air may be supplied to the valve. ThlS shleld engages the outer wall surface of a gasket 28 as indicated at 28', so as to form a tight o1nt and thereby prevent any foreign matter that may settle in the bottom of the action box from entering the valve. The shield isparticularly desirable in the construction of large pipe organs, where there is considerable wood work from which particles of sawdust or other foreign matter frequently remain in these devices. When these small particles are carried along the wind box and happen to enter the valve, they prevent the proper operation of these valve parts and theneby seriously interfere with themusical qualities of the instrument. The shield 29' thus shown is made of heavy aper and extends nearly to the t of e magnet so as to form aconduit at shall receive air from the interior of the wind box and deliver the same to the opening 18 in the valve casing. While the shield is shown of heavy paper, it is obvious that any other suitable material might be employed, which shall prevent foreign matter enterin the valve passage. This construction provldes a shield which shall reduce to a minimum any puss sibility of foreign matter settlin around the valve passage and impairing o W tion of the valve.

The valve disk 20 for controlling the How of air through the valve casing is provided with a double sealing surface. On one side is a metallic surface 29 for closing the opem ing 18 when the disk is attracted by the magnet and on the other side is a paper surface 30 for engaging the valve seat as The disk is formed by placing a thin metsL lic disk and a paper disk or similar fibre material together and crim ing orfol over the edges of the meta so as to firmly secure the paper disk thereto, and form an integral unit. This construction provides a durable valve member having valve em ga 'ng surfaces which provide eflicient air= tig h t seals when in contact with therespective valve seats.

While I have shown a preferred embodiment of an electro-magnet organ valve unit constructed in accordance with the lit invention, it is obvious that various 0 anges may be made therein without departing from the scope of the claims.

What I claim is:

1. In an electro-pneumatic valve, the combination with a hollow casing of a removable cover for the casing includin a valve chamber spaced from the bottom 0 the casing, an air tube carried by the cover and communicating with the chamber, and a valve element located in the chamber, the side of said chamber also forming a guid'e for said valve element.

2. In an elcctro-pneumatic valve associated with an organ action box, a hollow casing, a cover for the casing, a valve chamber located within the casing and spaced from the cover so as to form another air cham= her, a tubular member extending through the cover and the bottom wall of the chamber to form a valve seat for a valve element in said chamber, and a conduit located in the casing and communicating with said second chamber and a port in the action btm m 3. In an electro-pneumatic valve associated with an organ action box, a hollow casing, a cover for the casing including a valve chamber located within the casing and spaced from the cover so as to form another air chamber, a tubular member extending through the cover and the bottom wall of the chamber to form a valve seat, a valve disc element, the walls of the chamber carried by said cover also forming a guide for the disc element, and means tor adjusting the tubular member to change the range of movement of the valve disk in said valve chamber.

4. In an electro-pneumatic valve associated with an organ action box, a hollow casing, a cover for the casing including a valve chamber located within the casing, said chamber being supported by the cover and in spaced relation thereto, so as to form another air chamber between the walls of said valve chamber and said cover, an air passage formed in the walls of said valve chamber, and a Valve element located in the chamber for regulating the passage of air through said valve chamber and said air chamber.

5. An electro-pneumatic valve for an organ action box comprising a valve casing, a valve chamber located therein having an opening arranged to communicate with the action box, an electro-magnet having its pole pieces mounted in the wall of the casing and close to the opening, and a shield surrounding said magnet and engaging the wall of the casing adjacent to said opening, to form a conduit for conducting air to said opening, and preventing heavy foreign matter from entering the valve chamber.

6. An eleot-ro-pneumatic valve for organs comprising a valve casing insertable in the wall of an organ action box, a valve chamber located therein having an opening communicating with the action box, an electromagnet having its pole pieces mounted in the wall of the casing and immediately adjacent the opening, a valve seat in said valve chamber, a valve element in said chamber comprising a composite disc having metallic and fibre portions, the metallic portion of said disc being disposed immediately adjacent the pole pieces of said electromagnet and the fibre portion of said disc being disposed directl adjacent the valve seat.

7 In a valve for organs, a base member having a recess therein for the passage of air, an electromagnet having its poles projecting into said base member, with a port disposed in said base member between the poles of said electromagnet, a plate member closing one side of said base, a valve guide carried by said plate member in alignment with the poles of said electromagnet, an adjustable valve seat carried by said valve guide and an armature movable within said valve guide and engageable with said valve guide in one of its limiting positions, said armature being confined in its lateral movement by said valve guide.

8. In a magnetic valve for organs, a supporting base, an electromagnet, a magnetic disc valve arranged to be actuated by said electromagnet, a plate member closing one side of said supporting base, a valve seat struck from said base member, with an annular peripheral portion thereof extending upwardly into said supporting base, and a valve guide comprising a cup shaped member disposed concentrically about said upstanding valve seat for limiting the lateral movement of said magnetic disc valve.

9. In a valve for organs, a base member having a recess therein for the passage of air, an electromagnet having its poles projecting into said base member, with a port disposed in said base member between the poles of said electromagnet, a plate member closing one side of said base, a valve guide carried by said plate member in alignment with the poles of said electromagnet, a valve seat carried by said valve guide and an armature movable within said valve guide and engageable with said valve guide in one of its limiting positions, said armature being confined in its lateral movement by said valve guide.

10. In a magnetic valve for organs, a supporting base, an electromagnet, a magnetic disc valve arranged to be actuated by said electromagnet, a plate member closing one side of said supporting base, a valve seat connected to said base member, with an annular peripheral portion thereof extending upwardly into said supporting base, and a valve guide comprising a cup shaped member disposed concentrically about said upstanding valve seat for limiting the lateral movement of said magnetic disc valve.

In testimony whereof I atfix my signature.

HENRY E. BURTON. 

